<template>
  <!-- 容器 -->
  <div class="charts" ref="charts"></div>
</template>

<script>
//引入echarts
import { mapState } from 'vuex'
import * as echarts from 'echarts'
export default {
  name: '',
  mounted() {
    //初始化echarts实例
    this.lineCharts = echarts.init(this.$refs.charts)
    //配置数据
  },
  computed: {
    ...mapState({
      listState: (state) => state.Home.list
    })
  },
  watch: {
    listState() {
      this.lineCharts.setOption({
        tooltip: {
          trigger: 'axis'
        },
        xAxis: {
          //隐藏x轴
          show: false,
          type: 'category'
        },
        yAxis: {
          //隐藏y轴
          show: false
        },
        //系列
        series: [
          {
            type: 'line',
            data: this.listState.visitTrend,
            //拐点的样式的设置
            itemStyle: {
              opacity: 0
            },
            //线条的样式
            lineStyle: {
              color: 'purple'
            },
            smooth: true,
            //填充颜色设置
            areaStyle: {
              color: {
                type: 'linear',
                x: 0,
                y: 0,
                x2: 0,
                y2: 1,
                colorStops: [
                  {
                    offset: 0,
                    color: 'purple' // 0% 处的颜色
                  },
                  {
                    offset: 1,
                    color: '#fff' // 100% 处的颜色
                  }
                ],
                global: false // 缺省为 false
              }
            }
          }
        ],
        //布局调试
        grid: {
          left: 0,
          top: 0,
          right: 0,
          bottom: 0
        }
      })
    }
  }
}
</script>

<style scoped>
.charts {
  width: 100%;
  height: 100%;
}
</style>
